sound/usb/usx2y/us122l.c

   1 /*
   2  * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #include <linux/slab.h>
  20 #include <linux/usb.h>
  21 #include <linux/usb/audio.h>
  22 #include <sound/core.h>
  23 #include <sound/hwdep.h>
  24 #include <sound/pcm.h>
  25 #include <sound/initval.h>
  26 #define MODNAME "US122L"
  27 #include "usb_stream.c"
  28 #include "../usbaudio.h"
  29 #include "us122l.h"
  30
  31 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
  32 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
  33 MODULE_LICENSE("GPL");
  34
  35 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-max */
  36 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* Id for this card */
  37                                                         /* Enable this card */
  38 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  39
  40 module_param_array(index, int, NULL, 0444);
  41 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
  42 module_param_array(id, charp, NULL, 0444);
  43 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
  44 module_param_array(enable, bool, NULL, 0444);
  45 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
  46
  47 static int snd_us122l_card_used[SNDRV_CARDS];
  48
  49
  50 static int us122l_create_usbmidi(struct snd_card *card)
  51 {
  52         static struct snd_usb_midi_endpoint_info quirk_data = {
  53                 .out_ep = 4,
  54                 .in_ep = 3,
  55                 .out_cables =   0x001,
  56                 .in_cables =    0x001
  57         };
  58         static struct snd_usb_audio_quirk quirk = {
  59                 .vendor_name =  "US122L",
  60                 .product_name = NAME_ALLCAPS,
  61                 .ifnum =        1,
  62                 .type = QUIRK_MIDI_US122L,
  63                 .data = &quirk_data
  64         };
  65         struct usb_device *dev = US122L(card)->dev;
  66         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
  67
  68         return snd_usbmidi_create(card, iface,
  69                                   &US122L(card)->midi_list, &quirk);
  70 }
  71
  72 static int us144_create_usbmidi(struct snd_card *card)
  73 {
  74         static struct snd_usb_midi_endpoint_info quirk_data = {
  75                 .out_ep = 4,
  76                 .in_ep = 3,
  77                 .out_cables =   0x001,
  78                 .in_cables =    0x001
  79         };
  80         static struct snd_usb_audio_quirk quirk = {
  81                 .vendor_name =  "US144",
  82                 .product_name = NAME_ALLCAPS,
  83                 .ifnum =        0,
  84                 .type = QUIRK_MIDI_US122L,
  85                 .data = &quirk_data
  86         };
  87         struct usb_device *dev = US122L(card)->dev;
  88         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
  89
  90         return snd_usbmidi_create(card, iface,
  91                                   &US122L(card)->midi_list, &quirk);
  92 }
  93
  94 /*
  95  * Wrapper for usb_control_msg().
  96  * Allocates a temp buffer to prevent dmaing from/to the stack.
  97  */
  98 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
  99                           __u8 request, __u8 requesttype,
 100                           __u16 value, __u16 index, void *data,
 101                           __u16 size, int timeout)
 102 {
 103         int err;
 104         void *buf = NULL;
 105
 106         if (size > 0) {
 107                 buf = kmemdup(data, size, GFP_KERNEL);
 108                 if (!buf)
 109                         return -ENOMEM;
 110         }
 111         err = usb_control_msg(dev, pipe, request, requesttype,
 112                               value, index, buf, size, timeout);
 113         if (size > 0) {
 114                 memcpy(data, buf, size);
 115                 kfree(buf);
 116         }
 117         return err;
 118 }
 119
 120 static void pt_info_set(struct usb_device *dev, u8 v)
 121 {
 122         int ret;
 123
 124         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 125                               'I',
 126                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 127                               v, 0, NULL, 0, 1000);
 128         snd_printdd(KERN_DEBUG "%i\n", ret);
 129 }
 130
 131 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
 132 {
 133         struct us122l *us122l = area->vm_private_data;
 134         atomic_inc(&us122l->mmap_count);
 135         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 136 }
 137
 138 static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
 139                                      struct vm_fault *vmf)
 140 {
 141         unsigned long offset;
 142         struct page *page;
 143         void *vaddr;
 144         struct us122l *us122l = area->vm_private_data;
 145         struct usb_stream *s;
 146
 147         mutex_lock(&us122l->mutex);
 148         s = us122l->sk.s;
 149         if (!s)
 150                 goto unlock;
 151
 152         offset = vmf->pgoff << PAGE_SHIFT;
 153         if (offset < PAGE_ALIGN(s->read_size))
 154                 vaddr = (char *)s + offset;
 155         else {
 156                 offset -= PAGE_ALIGN(s->read_size);
 157                 if (offset >= PAGE_ALIGN(s->write_size))
 158                         goto unlock;
 159
 160                 vaddr = us122l->sk.write_page + offset;
 161         }
 162         page = virt_to_page(vaddr);
 163
 164         get_page(page);
 165         mutex_unlock(&us122l->mutex);
 166
 167         vmf->page = page;
 168
 169         return 0;
 170 unlock:
 171         mutex_unlock(&us122l->mutex);
 172         return VM_FAULT_SIGBUS;
 173 }
 174
 175 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
 176 {
 177         struct us122l *us122l = area->vm_private_data;
 178         atomic_dec(&us122l->mmap_count);
 179         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 180 }
 181
 182 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
 183         .open = usb_stream_hwdep_vm_open,
 184         .fault = usb_stream_hwdep_vm_fault,
 185         .close = usb_stream_hwdep_vm_close,
 186 };
 187
 188
 189 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
 190 {
 191         struct us122l   *us122l = hw->private_data;
 192         struct usb_interface *iface;
 193         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 194         if (hw->used >= 2)
 195                 return -EBUSY;
 196
 197         if (!us122l->first)
 198                 us122l->first = file;
 199
 200         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 201             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 202                 iface = usb_ifnum_to_if(us122l->dev, 0);
 203                 usb_autopm_get_interface(iface);
 204         }
 205         iface = usb_ifnum_to_if(us122l->dev, 1);
 206         usb_autopm_get_interface(iface);
 207         return 0;
 208 }
 209
 210 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
 211 {
 212         struct us122l   *us122l = hw->private_data;
 213         struct usb_interface *iface;
 214         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 215
 216         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 217             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 218                 iface = usb_ifnum_to_if(us122l->dev, 0);
 219                 usb_autopm_put_interface(iface);
 220         }
 221         iface = usb_ifnum_to_if(us122l->dev, 1);
 222         usb_autopm_put_interface(iface);
 223         if (us122l->first == file)
 224                 us122l->first = NULL;
 225         mutex_lock(&us122l->mutex);
 226         if (us122l->master == file)
 227                 us122l->master = us122l->slave;
 228
 229         us122l->slave = NULL;
 230         mutex_unlock(&us122l->mutex);
 231         return 0;
 232 }
 233
 234 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
 235                                  struct file *filp, struct vm_area_struct *area)
 236 {
 237         unsigned long   size = area->vm_end - area->vm_start;
 238         struct us122l   *us122l = hw->private_data;
 239         unsigned long offset;
 240         struct usb_stream *s;
 241         int err = 0;
 242         bool read;
 243
 244         offset = area->vm_pgoff << PAGE_SHIFT;
 245         mutex_lock(&us122l->mutex);
 246         s = us122l->sk.s;
 247         read = offset < s->read_size;
 248         if (read && area->vm_flags & VM_WRITE) {
 249                 err = -EPERM;
 250                 goto out;
 251         }
 252         snd_printdd(KERN_DEBUG "%lu %u\n", size,
 253                     read ? s->read_size : s->write_size);
 254         /* if userspace tries to mmap beyond end of our buffer, fail */
 255         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
 256                 snd_printk(KERN_WARNING "%lu > %u\n", size,
 257                            read ? s->read_size : s->write_size);
 258                 err = -EINVAL;
 259                 goto out;
 260         }
 261
 262         area->vm_ops = &usb_stream_hwdep_vm_ops;
 263         area->vm_flags |= VM_RESERVED;
 264         area->vm_private_data = us122l;
 265         atomic_inc(&us122l->mmap_count);
 266 out:
 267         mutex_unlock(&us122l->mutex);
 268         return err;
 269 }
 270
 271 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
 272                                           struct file *file, poll_table *wait)
 273 {
 274         struct us122l   *us122l = hw->private_data;
 275         struct usb_stream *s = us122l->sk.s;
 276         unsigned        *polled;
 277         unsigned int    mask;
 278
 279         poll_wait(file, &us122l->sk.sleep, wait);
 280
 281         switch (s->state) {
 282         case usb_stream_ready:
 283                 if (us122l->first == file)
 284                         polled = &s->periods_polled;
 285                 else
 286                         polled = &us122l->second_periods_polled;
 287                 if (*polled != s->periods_done) {
 288                         *polled = s->periods_done;
 289                         mask = POLLIN | POLLOUT | POLLWRNORM;
 290                         break;
 291                 }
 292                 /* Fall through */
 293                 mask = 0;
 294                 break;
 295         default:
 296                 mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
 297                 break;
 298         }
 299         return mask;
 300 }
 301
 302 static void us122l_stop(struct us122l *us122l)
 303 {
 304         struct list_head *p;
 305         list_for_each(p, &us122l->midi_list)
 306                 snd_usbmidi_input_stop(p);
 307
 308         usb_stream_stop(&us122l->sk);
 309         usb_stream_free(&us122l->sk);
 310 }
 311
 312 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
 313 {
 314         unsigned int ep = 0x81;
 315         unsigned char data[3];
 316         int err;
 317
 318         data[0] = rate;
 319         data[1] = rate >> 8;
 320         data[2] = rate >> 16;
 321         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
 322                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
 323                              UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000);
 324         if (err < 0)
 325                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
 326                            dev->devnum, rate, ep);
 327         return err;
 328 }
 329
 330 static bool us122l_start(struct us122l *us122l,
 331                          unsigned rate, unsigned period_frames)
 332 {
 333         struct list_head *p;
 334         int err;
 335         unsigned use_packsize = 0;
 336         bool success = false;
 337
 338         if (us122l->dev->speed == USB_SPEED_HIGH) {
 339                 /* The us-122l's descriptor defaults to iso max_packsize 78,
 340                    which isn't needed for samplerates <= 48000.
 341                    Lets save some memory:
 342                 */
 343                 switch (rate) {
 344                 case 44100:
 345                         use_packsize = 36;
 346                         break;
 347                 case 48000:
 348                         use_packsize = 42;
 349                         break;
 350                 case 88200:
 351                         use_packsize = 72;
 352                         break;
 353                 }
 354         }
 355         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
 356                             rate, use_packsize, period_frames, 6))
 357                 goto out;
 358
 359         err = us122l_set_sample_rate(us122l->dev, rate);
 360         if (err < 0) {
 361                 us122l_stop(us122l);
 362                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 363                 goto out;
 364         }
 365         err = usb_stream_start(&us122l->sk);
 366         if (err < 0) {
 367                 us122l_stop(us122l);
 368                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
 369                 goto out;
 370         }
 371         list_for_each(p, &us122l->midi_list)
 372                 snd_usbmidi_input_start(p);
 373         success = true;
 374 out:
 375         return success;
 376 }
 377
 378 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 379                                   unsigned cmd, unsigned long arg)
 380 {
 381         struct usb_stream_config *cfg;
 382         struct us122l *us122l = hw->private_data;
 383         unsigned min_period_frames;
 384         int err = 0;
 385         bool high_speed;
 386
 387         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
 388                 return -ENOTTY;
 389
 390         cfg = memdup_user((void *)arg, sizeof(*cfg));
 391         if (IS_ERR(cfg))
 392                 return PTR_ERR(cfg);
 393
 394         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
 395                 err = -ENXIO;
 396                 goto free;
 397         }
 398         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 399         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 400              (!high_speed ||
 401               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
 402             cfg->frame_size != 6 ||
 403             cfg->period_frames > 0x3000) {
 404                 err = -EINVAL;
 405                 goto free;
 406         }
 407         switch (cfg->sample_rate) {
 408         case 44100:
 409                 min_period_frames = 48;
 410                 break;
 411         case 48000:
 412                 min_period_frames = 52;
 413                 break;
 414         default:
 415                 min_period_frames = 104;
 416                 break;
 417         }
 418         if (!high_speed)
 419                 min_period_frames <<= 1;
 420         if (cfg->period_frames < min_period_frames) {
 421                 err = -EINVAL;
 422                 goto free;
 423         }
 424
 425         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 426
 427         mutex_lock(&us122l->mutex);
 428         if (!us122l->master)
 429                 us122l->master = file;
 430         else if (us122l->master != file) {
 431                 if (memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg))) {
 432                         err = -EIO;
 433                         goto unlock;
 434                 }
 435                 us122l->slave = file;
 436         }
 437         if (!us122l->sk.s ||
 438             memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg)) ||
 439             us122l->sk.s->state == usb_stream_xrun) {
 440                 us122l_stop(us122l);
 441                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
 442                         err = -EIO;
 443                 else
 444                         err = 1;
 445         }
 446 unlock:
 447         mutex_unlock(&us122l->mutex);
 448 free:
 449         kfree(cfg);
 450         return err;
 451 }
 452
 453 #define SND_USB_STREAM_ID "USB STREAM"
 454 static int usb_stream_hwdep_new(struct snd_card *card)
 455 {
 456         int err;
 457         struct snd_hwdep *hw;
 458         struct usb_device *dev = US122L(card)->dev;
 459
 460         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 461         if (err < 0)
 462                 return err;
 463
 464         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 465         hw->private_data = US122L(card);
 466         hw->ops.open = usb_stream_hwdep_open;
 467         hw->ops.release = usb_stream_hwdep_release;
 468         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 469         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 470         hw->ops.mmap = usb_stream_hwdep_mmap;
 471         hw->ops.poll = usb_stream_hwdep_poll;
 472
 473         sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
 474                 dev->bus->busnum, dev->devnum);
 475         return 0;
 476 }
 477
 478
 479 static bool us122l_create_card(struct snd_card *card)
 480 {
 481         int err;
 482         struct us122l *us122l = US122L(card);
 483
 484         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 485             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 486                 err = usb_set_interface(us122l->dev, 0, 1);
 487                 if (err) {
 488                         snd_printk(KERN_ERR "usb_set_interface error \n");
 489                         return false;
 490                 }
 491         }
 492         err = usb_set_interface(us122l->dev, 1, 1);
 493         if (err) {
 494                 snd_printk(KERN_ERR "usb_set_interface error \n");
 495                 return false;
 496         }
 497
 498         pt_info_set(us122l->dev, 0x11);
 499         pt_info_set(us122l->dev, 0x10);
 500
 501         if (!us122l_start(us122l, 44100, 256))
 502                 return false;
 503
 504         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 505             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
 506                 err = us144_create_usbmidi(card);
 507         else
 508                 err = us122l_create_usbmidi(card);
 509         if (err < 0) {
 510                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 511                 us122l_stop(us122l);
 512                 return false;
 513         }
 514         err = usb_stream_hwdep_new(card);
 515         if (err < 0) {
 516 /* release the midi resources */
 517                 struct list_head *p;
 518                 list_for_each(p, &us122l->midi_list)
 519                         snd_usbmidi_disconnect(p);
 520
 521                 us122l_stop(us122l);
 522                 return false;
 523         }
 524         return true;
 525 }
 526
 527 static void snd_us122l_free(struct snd_card *card)
 528 {
 529         struct us122l   *us122l = US122L(card);
 530         int             index = us122l->card_index;
 531         if (index >= 0  &&  index < SNDRV_CARDS)
 532                 snd_us122l_card_used[index] = 0;
 533 }
 534
 535 static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
 536 {
 537         int             dev;
 538         struct snd_card *card;
 539         int err;
 540
 541         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 542                 if (enable[dev] && !snd_us122l_card_used[dev])
 543                         break;
 544         if (dev >= SNDRV_CARDS)
 545                 return -ENODEV;
 546         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
 547                               sizeof(struct us122l), &card);
 548         if (err < 0)
 549                 return err;
 550         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 551         card->private_free = snd_us122l_free;
 552         US122L(card)->dev = device;
 553         mutex_init(&US122L(card)->mutex);
 554         init_waitqueue_head(&US122L(card)->sk.sleep);
 555         INIT_LIST_HEAD(&US122L(card)->midi_list);
 556         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 557         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 558         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 559                 card->shortname,
 560                 le16_to_cpu(device->descriptor.idVendor),
 561                 le16_to_cpu(device->descriptor.idProduct),
 562                 0,
 563                 US122L(card)->dev->bus->busnum,
 564                 US122L(card)->dev->devnum
 565                 );
 566         *cardp = card;
 567         return 0;
 568 }
 569
 570 static int us122l_usb_probe(struct usb_interface *intf,
 571                             const struct usb_device_id *device_id,
 572                             struct snd_card **cardp)
 573 {
 574         struct usb_device *device = interface_to_usbdev(intf);
 575         struct snd_card *card;
 576         int err;
 577
 578         err = usx2y_create_card(device, &card);
 579         if (err < 0)
 580                 return err;
 581
 582         snd_card_set_dev(card, &intf->dev);
 583         if (!us122l_create_card(card)) {
 584                 snd_card_free(card);
 585                 return -EINVAL;
 586         }
 587
 588         err = snd_card_register(card);
 589         if (err < 0) {
 590                 snd_card_free(card);
 591                 return err;
 592         }
 593
 594         usb_get_intf(usb_ifnum_to_if(device, 0));
 595         usb_get_dev(device);
 596         *cardp = card;
 597         return 0;
 598 }
 599
 600 static int snd_us122l_probe(struct usb_interface *intf,
 601                             const struct usb_device_id *id)
 602 {
 603         struct usb_device *device = interface_to_usbdev(intf);
 604         struct snd_card *card;
 605         int err;
 606
 607         if ((device->descriptor.idProduct == USB_ID_US144 ||
 608              device->descriptor.idProduct == USB_ID_US144MKII)
 609                 && device->speed == USB_SPEED_HIGH) {
 610                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 611                 return -ENODEV;
 612         }
 613
 614         snd_printdd(KERN_DEBUG"%p:%i\n",
 615                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
 616         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 617                 return 0;
 618
 619         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
 620         if (err < 0) {
 621                 usb_put_intf(intf);
 622                 return err;
 623         }
 624
 625         usb_set_intfdata(intf, card);
 626         return 0;
 627 }
 628
 629 static void snd_us122l_disconnect(struct usb_interface *intf)
 630 {
 631         struct snd_card *card;
 632         struct us122l *us122l;
 633         struct list_head *p;
 634
 635         card = usb_get_intfdata(intf);
 636         if (!card)
 637                 return;
 638
 639         snd_card_disconnect(card);
 640
 641         us122l = US122L(card);
 642         mutex_lock(&us122l->mutex);
 643         us122l_stop(us122l);
 644         mutex_unlock(&us122l->mutex);
 645
 646 /* release the midi resources */
 647         list_for_each(p, &us122l->midi_list) {
 648                 snd_usbmidi_disconnect(p);
 649         }
 650
 651         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
 652         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 653         usb_put_dev(us122l->dev);
 654
 655         while (atomic_read(&us122l->mmap_count))
 656                 msleep(500);
 657
 658         snd_card_free(card);
 659 }
 660
 661 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
 662 {
 663         struct snd_card *card;
 664         struct us122l *us122l;
 665         struct list_head *p;
 666
 667         card = usb_get_intfdata(intf);
 668         if (!card)
 669                 return 0;
 670         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 671
 672         us122l = US122L(card);
 673         if (!us122l)
 674                 return 0;
 675
 676         list_for_each(p, &us122l->midi_list)
 677                 snd_usbmidi_input_stop(p);
 678
 679         mutex_lock(&us122l->mutex);
 680         usb_stream_stop(&us122l->sk);
 681         mutex_unlock(&us122l->mutex);
 682
 683         return 0;
 684 }
 685
 686 static int snd_us122l_resume(struct usb_interface *intf)
 687 {
 688         struct snd_card *card;
 689         struct us122l *us122l;
 690         struct list_head *p;
 691         int err;
 692
 693         card = usb_get_intfdata(intf);
 694         if (!card)
 695                 return 0;
 696
 697         us122l = US122L(card);
 698         if (!us122l)
 699                 return 0;
 700
 701         mutex_lock(&us122l->mutex);
 702         /* needed, doesn't restart without: */
 703         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 704             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 705                 err = usb_set_interface(us122l->dev, 0, 1);
 706                 if (err) {
 707                         snd_printk(KERN_ERR "usb_set_interface error \n");
 708                         goto unlock;
 709                 }
 710         }
 711         err = usb_set_interface(us122l->dev, 1, 1);
 712         if (err) {
 713                 snd_printk(KERN_ERR "usb_set_interface error \n");
 714                 goto unlock;
 715         }
 716
 717         pt_info_set(us122l->dev, 0x11);
 718         pt_info_set(us122l->dev, 0x10);
 719
 720         err = us122l_set_sample_rate(us122l->dev,
 721                                      us122l->sk.s->cfg.sample_rate);
 722         if (err < 0) {
 723                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 724                 goto unlock;
 725         }
 726         err = usb_stream_start(&us122l->sk);
 727         if (err)
 728                 goto unlock;
 729
 730         list_for_each(p, &us122l->midi_list)
 731                 snd_usbmidi_input_start(p);
 732 unlock:
 733         mutex_unlock(&us122l->mutex);
 734         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 735         return err;
 736 }
 737
 738 static struct usb_device_id snd_us122l_usb_id_table[] = {
 739         {
 740                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 741                 .idVendor =     0x0644,
 742                 .idProduct =    USB_ID_US122L
 743         },
 744         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
 745                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 746                 .idVendor =     0x0644,
 747                 .idProduct =    USB_ID_US144
 748         },
 749         {
 750                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 751                 .idVendor =     0x0644,
 752                 .idProduct =    USB_ID_US122MKII
 753         },
 754         {
 755                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 756                 .idVendor =     0x0644,
 757                 .idProduct =    USB_ID_US144MKII
 758         },
 759         { /* terminator */ }
 760 };
 761
 762 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 763 static struct usb_driver snd_us122l_usb_driver = {
 764         .name =         "snd-usb-us122l",
 765         .probe =        snd_us122l_probe,
 766         .disconnect =   snd_us122l_disconnect,
 767         .suspend =      snd_us122l_suspend,
 768         .resume =       snd_us122l_resume,
 769         .reset_resume = snd_us122l_resume,
 770         .id_table =     snd_us122l_usb_id_table,
 771         .supports_autosuspend = 1
 772 };
 773
 774
 775 static int __init snd_us122l_module_init(void)
 776 {
 777         return usb_register(&snd_us122l_usb_driver);
 778 }
 779
 780 static void __exit snd_us122l_module_exit(void)
 781 {
 782         usb_deregister(&snd_us122l_usb_driver);
 783 }
 784
 785 module_init(snd_us122l_module_init)
 786 module_exit(snd_us122l_module_exit)